Nylon, a synthetic polymer, was first produced by Wallace Carothers in 1935. It is one of the most commonly used polymers. The thermoplastic, silky material was first used in a nylon-bristled toothbrush, then women's stockings.
Nylon was made of repeating units linked by amide bonds and is frequently referred to as ppolyamide (PA). There are two common methods of making nylon for fiber applications. It was the first commercially successful synthetic polymer.
It was originally intended...

Cellophane, made of regenerated cellulose, is a thin, transparent sheet with low permeability to air, oils, greases, and bacteria. In many countries it is a registered trademark of Innovia Films Ltd. Cellulose from most sources is dissolved in alkali and carbon disulfide to make a solution called viscose that is then extruded through a slit into a bath of dilute sulfuric acid and sodium sulfate which reconverts the viscose into cellulose. It is then passed through more baths to prevent it...